With autumn comes a spectacular natural array of red, orange, and yellow hues. But for the 13 million people in the U.S. who are color blind these dazzling colors appear as shades of dull brown and black.

To ensure that everyone gets a chance to see its state's stunning transitional colors, the Tennessee Department of Tourist Development recently installed special color blind viewfinders that alleviate red-green color deficiencies and show the landscape's bright colors.

In the video above you can watch the touching moment people with color blindness see fall foliage for the first time at the Ober Gatlinburg resort in Gatlinburg, Tennessee. "Everybody at work was saying how pretty the colors are," one of the video's subjects said about being unable to fully experience fall foliage. "You don't know you're missing it because you never saw it to begin with."

But as the subjects approach the viewfinders, their first glimpses draw tears, smiles, and faces stunned by wonder and awe. Many take a step back to appreciate what they just witnessed. "I'm glad to have seen it," another man said. "I just wish I'd seen this all my life. It's kind of what I image the difference between here and heaven."

Based on their reactions, we can expect these men and others who suffer from color blindness to make the trip year after year to experience the beauty of Tennessee. "I mean, I really feel like now I know why people come from miles and states around just to see—just to see this," another color blind man said.

With autumn comes a spectacular natural array of red, orange, and yellow hues. But for the 13 million people in the U.S. who are color blind these dazzling colors appear as shades of dull brown and black.

To ensure that everyone gets a chance to see its state's stunning transitional colors, the Tennessee Department of Tourist Development recently installed special color blind viewfinders that alleviate red-green color deficiencies and show the landscape's bright colors.